Generator for steam heating apparatus



(No Model.) `2 sheets-sheet 1.

T. C. JOY.

GENERATOR POR STEAM HEATING APPARATUS. No. 258,075.

Patented May 16, 1882.

AR @A 59 ya? 4L.

wre wcm- NA PETERS. Phalwulnagnpmr. washington. D. C

(No Model.) 2 sheets-,sheet 2.

T. C. JOY.

GENERATOR EOE STEAM HEATING APPARATUS. N0. 258,075. Patented a.y16,1882.

gy v Lm anim? @4M-f; M7

N. PETERS, nwmumgnpm. wasmngm. D. c,

UNITED STATES i PATENT OFFICE.

THADDEUS G. JOY, OF TITIISVILLE, PENNSYLVANIA.

GENERATOR FOR STEAM'HEATING APPARATUS.-

SPECIFICATION forming part of Letters Patent No. 258,075, dated May 16, 1882.

' l t Application tiled February 2,1882. (No model.) 4

To all whomit may concern Be it known that LTHADDEUS C. JOY, of Titusville, inthe county of Crawford and State of Pennsylvania, have invented a new and usef ul Improvement in Generators for Steam Heating Apparatusyand Ido hereby declare the following to be a full,`clcar, and exact description thereof My invention relates to that class of steam- 1o generators which is used for generating steam for heating` purposes; and it consists in improvements in the construction of the same.

To enable others skilled in the art to make and use myinvention, I will" now describe it by reference tofthe accompanying drawings,

in whichj Figure 1 is an elevation of my improved generator. Fig. 2 is a vertical section on the line w w, Fig. 3. Fig. 3 is a plan view. Fig. 4: is

zo across-section on the line .r w, Fig. 1. Fig. 5 is a crosssection on the line y y`,'Fig. 2,0t two of the adjoining sections. Fig.6 is a perspec- 't-ive view of one of thev sections. Fig. 7 is a view of two of the plates of whichthe maga- 2 5 zine is formed. Fig. Sis a cross-section of the base-section. Fig. 9 is a perspective view of a piece of the grate-ring and projections,`and

Fig. 10 is a perspective view'of a part of the base-section.

Like numbers of rei'erenceindicate like parts. The generator is composed of the following partshviz., an; annular `ba`sesection, 1, which forms the `hre-box, a sectional hollow casin g, 2, having vertical Haine tubes or flues 3 exl 3 5 tending through it, a central coa1-reservoir, 41,

a lire-space, 5, around said reservoir, vertical water-chambers `25, vsuspended. or Vprojectin g from the hollow easing 2 into the tire-space 5, and a steamdrum, 17, placed above and com 4o municating with the generatingchambers.

The annular base-section 1 has hollow sides, and forms a water-chamber, 8, around the lirechamber 5. The inner wall of the fire-pot 1 is preferably uted or corrugated, the said wall being of equal thickness. The purpose of this construction is to obtain increased iire-surface and the more thorough and free combustion of the fuel. The corrugations admitting the air along the wall up past the edge of the fuel 5o increase combustion and produce great heat atthat point, and thereby completely prevent the coal from chilling and coking against the or projections 14, which extend up into the basesection 1 to such a distance that the graterin g 10 and grate may be dropped or adjusted below the base 1 to any desired distance, for

increasing combustion or removing clinkers,

`without permitting the coals to drop out at the sides and `so waste the fuel; or the lugs 14 may be arranged on the bottom of the base 1 and extend down past the edge of the ring 10. This will accomplish the same result. When separate grate-bars 13 are used they may be inserted between the lugs 14 on the upper side of the grate-ring 10, upon which they may be placed from either side.

Instead of solid bolts 11, I muy use one or more short externally-threaded pipes, 15, opening into the water-chamber 8', and these pipes, in addition to sustainingthe ring 10, also serve for use as supply, blow-olf, or return pipes to the generator. `The waterchamber S communicates with the sectional generating-chambers ofthe easing 2 by short pipes or nipples 16, 011e of which extends to each section. The function ot' this method of supporting the grate `upon a ring dropped below `the tire-pot is `mainly that it affords an opening all around for removing clinkers and gives abetter draft. Where access to the trepot from above is cramped or limited, asin the case of this class of steam-generators, it is especially desirable to provide means for removing the clinkers 'from below without materially disturbing the lire.

IOO

or'less, hollow segments,48. Each segment has a radial inward projection, 17, at its upper end.

These projections 17 are hollow and communicate with the chambers 18 of the segments 48, formin gone chambertherew-ith. They communicate with each other by means of the openings 19 in the meeting edges of the sections, the joints being made perfectly steamtight by having the meeting faces planed and packed with asbestus or other suitable packing. The advantage of this way of establishing the communication between the sections ofthe steam-drum is that it dispenses with the use of short pipes or nipples and enables the annular space 2.

l to the smoke-flue 42.

me to have a more compact and simple structure. The hollow radial projections 17 thus communicating constitute the steam-drum ot' the generator. In the sides ot' the segments 48vare V-sha-ped recesses 20, extending from .the lower end up to the radial projections, so

that when two segments are brought together their V-shaped recesses, meeting, form a smoke or flame flue, 3, which extends down through At the lower end ot the lines 3 the base-section 1 is cut away or recessed on the outside, as at 21,'to give an outlet from the tlues 3 to the chamber4l,whereby the products of combustion are enabled to pass out into the chamber 41, whence they proceed The under sides of the radial projections 1.7 are beveled or flaring toward the top, so that their whole inner surfaces shall be exposed to the heat, and so that L the lateral space 22 between the projections 17 shall conduct the products of combustion from the heating-chamber 5 over the upper edge of the inner wall, 24, into the return-fines 3.

Inside ,of the sectional casing 2 are eight, or more or less, secondary hollow steam-generating chambers, 25, preferably of V form in cross-section, the apex being inward and the ends outward. These chambers communicate with the segmental waterchambers 18 by pipes 26at the lower end, and at the upper end with fthe radial projections 17 by pipes or nipples 27. As the projections 17 constitute the steamgreat generating power. They may be of other shapes, but I prefer the shape shown.

An advantage of the corrugated or iuted tire-box 1 is that the combustion is most perfect at the tintes, and the heat is consequently greatest there. Thus the tlame and heat rising directly from the. tintes strike upon or around the steam-generating chambers 25, so that they are exposed to the most intense heat and have a very high generating power.

vOn the lower end of the apex of each section 25 is an inverted T-lug, 28, and at the upper end is a plain vertical lug, 29, in line with the vertical trunk of lower T-lug. When the seging them on the adjacent horizontal parts of 7o the inverted Ts ot' the adjoining segments. One ot' the straight lugs 29 projects between the upper ends of cach pair of flue-plates. The advantage ot the use ot' these removable flueplates is, that they are cheap in construction, easily inserted and removed, and that they permit the removal of burnt plates and their replacement with new ones without renewing the whole reservoir. The lugs on the upper and lower ends of the chambers 25 are cheap and efficient means of supporting and securing the plates.

In the sides ot each projection 17, I make a semicircular groove, 32, so that when two segments 48 are united there is formed by the two selnieircular grooves a hole or opening, 33, directly over the upper end ot the inner wall, 24, of the segments, so that a brush or other instrument may be inserted, and the walls ot' the hues 3 and ot the heating-chamber 5 may be cleaned from the one opening. The holes 33 and the reservoir are closed by suitable caps, 34 and 35. The segments are secured to the {irc-pot- 1 by bolts through lugs 37, and to each other by bolts 38 and lugs 39.

The furnace may be inclosed in brick-work, or it may have a surrounding casing, 40, of sheet-iron, forming a surrounding chamber, 4l, a suitable smoke liue, 42, and an ash-pit, 43. Doors 44, 45, and 46 are provided to giveaccess tothe fire-chamber above thetre-pot 1.

ICO

the tire-pot, it is necessary to make o ne or more of the chambers, 18, shorter than the others. The outer surface of thebase-section 1 is cut out, as at 21, at the lower ends of the downtlues 3 to establish communication between them and the casing-chamber 4l. The steam-circulating pipe or pipes lead out of the steam-drum as usual.

The course of the flame is as follows: It rises from the tire-pot 1, through the chamber 5, around the reservoir and the V-chambers, and up to and against the radial projections 17,

IIO

thence over the upper edge of the inner walls, l

24, of the segments 48 to and downthrough the tlues 3, out into the casing-chamber 41, and thence to the smoke-Hue 42.

Though I have shown a re-pot and gratesupport of novel construction because the same is best adapted for use with the generator which is the subject-matter of this invention, yet I do not herein claim said lire-pot or gratesupport, the same being the subject-matter of a separate case.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. An annular steam-generator composed of segments having downwardiame-tlues extending through them, in combination with an annular grate-section, which supports the segmental generator, and is beveled or eut away at the ends of the downward flame-lines to give exit to the flame, substantially as and for the purposes described.

. 2i A segmental steam-generator composed' of hollow segments, e'ach having a radial inward projection extending over the re-cham ber, the interior of bothy segment and projection constituting one chamber, the lower part of which acts as a steam-generator and the upper part as a steam-drum, substantially as and for the purposes described;

3. A segment of a steam-generator, having atapering radial projection aty its upper end, the lower side of which is tapered or coneshaped, so that when in place it shall be eX- posed to the action of the heat arising from below, substantially as and for the purposes described.

4. A segmental steam-generator composed of hollow segments having inward radial pro jections which ,communicate with each other by ground and packed joints, substantially as and for the purposes described.

5. Asegmental steam-generator having rcturn-dues extending down between the segments, combined with segments having radial projections extending inward at the upper ends, which projections haveco'neshaped or tapered under surfaces, so'as to form between them the passages to the return-fines and to increase their heating-surface, substantially as described.

6. A segmental steam-generator having a vertical tire-chamber and return-lines, pro vided with holes or openings directly over the wall between the fire-chamber and return-lines, so as to permit the introduction through one opening of a brush or other device for cleaning the walls of both, substantially as and for the purposes described. j

'7.1 A segmental steam -generator having steamgenerating chambers projecting from the annular water-chamber formed by the segments into the central lire-chamber, in combinationwith overhan ging radial projections eX- tending inward from the upper ends of the segments and nipples, making a direct Vertical connection between the secondary generatingchambers and the radial projections, substantially as and for the purposes described.

8. A steam-generator having a central fuelreservoir composed of sectional plates secured in or by supporting and retaining lugs on the steam-generatin g chambers which surround or are placed in the fire-chamber, substantially as and for the purposes described.

9. In a segmental steam-generator having secondary generating-chambers extending in from the main or segmental chambers, inverted T-lugs at the lower end and vertical lugs at the upper ends of said secondary chambers, for supporting, and in combina-tion with, flue-plates placed thereon and forming a fuel-reservoir in the center of said generator, substantially as and for the purpose described." Y

In testimony whereof I have hereunto set my hand this 23d day of January, A. D. 1882.

THADDEUS C. JOY.

Witnesses:

JOHN W. APPLE, SAMUEL GRUMBINE. 

